i am try to capture the scree by using following coding..
Dim gr As Graphics
bm = New Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, Drawing.Imaging.PixelFormat.Format32bppArgb)
gr = Graphics.FromImage(bm)
gr.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y, 0, 0, New Size(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height))but
"The handle is invalid" error occoured..